21=(2x+1)+(x-4)

Simple and best practice solution for 21=(2x+1)+(x-4) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 21=(2x+1)+(x-4) equation: 



21=(2x+1)+(x-4)

We move all terms to the left:

21-((2x+1)+(x-4))=0



We calculate terms in parentheses: -((2x+1)+(x-4)), so:

(2x+1)+(x-4)

We get rid of parentheses

2x+x+1-4

We add all the numbers together, and all the variables

3x-3

Back to the equation:

-(3x-3)



We get rid of parentheses

-3x+3+21=0

We add all the numbers together, and all the variables

-3x+24=0

We move all terms containing x to the left, all other terms to the right

-3x=-24

x=-24/-3

x=+8

See similar equations:

| 3(5x+6)=-41+28 | | z+2/5=-3 | | 7/y=1 | | x-14.25=3 | | -2n-4(7n-7)=2n-4 | | 2+4x+32=9x-10 | | 10+2.50x=3 | | 13.87+0.09m=14.37-0.11m | | 4s-28=8 | | 3-(2x-9)=21 | | 6m-3=-3+6m | | (x–5)=86 | | 3x=14.25 | | 1-3x=61 | | 40=4(1+k | | 12-3x-5=-11 | | -4+3n=-12+3n | | 6x+3+9x-3+90=180 | | 8x+26=48-14x | | -(5p-8)=-5p+11 | | -3(-9u+8)-9u=2(u-4)-4 | | -7x-6+3x=-22 | | 3x-5+67+49=180 | | 1(z-12)=3z | | 9g=109+10 | | 4x^2+11x-20=20 | | 8x-17+51+90=180 | | 2x+7-3x=27 | | 8x+7+5=12+8x | | 50+50(89+x)=180 | | 7c-2=33 | | –10z+8=–9z |

Equations solver categories